i’m looking for a serum or something to help with my frizz. i’ve probably spent hundreds on tons of products that just sit on top of my hair and make it greasy or crunchy but don’t actually do anything to help and i always end up throwing/giving them away. oils don’t work, gels and creams don’t work, so i’m thinking some kind of serum or leave-in maybe?? any recs that don’t cost an arm and a leg?